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UV-VIS spectra and transmission electron microscope (TEM) images. (a) Plasmon resonance (SPR) for gold nanoparticles (AuNPs) and AuNPs–calreticulin obtained using chitosan as a reducing agent; the maximun of absorbance observed was 524 nm, corresponding to the formation SPR of gold nanoparticles. (b,c) Morphology of synthesized AuNPs–calreticulin.
